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268 results for “Lythrum salicaria”
Lythrum salicaria L. (BR0000011462583)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Lythrum salicaria L. (BR0000011461371)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Lythrum salicaria L. (BR0000022413291)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Lythrum salicaria L. (BR0000011461036)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Lythrum salicaria L. (BR0000011460657)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Lythrum salicaria (Lythraceae) - leaf - margin of upper + lower surface
Image of Lythrum salicaria (Lythraceae) - leaf - margin of upper + lower surface
Lythrum salicaria (Lythraceae) - inflorescence - frontal view of flower
Image of Lythrum salicaria (Lythraceae) - inflorescence - frontal view of flower
Lythrum salicaria (Lythraceae) - stem - showing leaf bases
Image of Lythrum salicaria (Lythraceae) - stem - showing leaf bases
Lythrum salicaria (Lythraceae) - whole plant - in flower - general view
Image of Lythrum salicaria (Lythraceae) - whole plant - in flower - general view
Lythrum salicaria (Lythraceae) - leaf - basal or on lower stem
Image of Lythrum salicaria (Lythraceae) - leaf - basal or on lower stem
Lythrum salicaria (Lythraceae) - inflorescence - whole - unspecified
Image of Lythrum salicaria (Lythraceae) - inflorescence - whole - unspecified
Greater flowering and response to flooding in Lythrum virgatum than L. salicaria (purple loosestrife)
<p>Newly introduced trait diversity can spur rapid evolution and facilitate local adaptation in the introduced plant <em>Lythrum</em> <em>salicaria</em>. The horticultural plant <em>L</em>. <em>virgatum</em> might further introduce meaningful trait variation by escaping into established L. salicaria populations or by hybridizing with <em>L</em>. <em>salicaria</em>. Although many experiments have focused on <em>L. salicaria</em> genotypes, relatively little is known about <em>L. virgatum</em> ecology. We used a greenhouse common garden to compare traits and flood response of <em>L. salicaria</em> and <em>L</em>. <em>virgatum</em> collected from two sources each in their native range. We tested the hypotheses that these two wetland taxa have comparable responses to flooding (inundation), and that flood tolerance correlated to higher fitness. Flooding produced stronger stress responses in <em>L. virgatum</em>. Compared to <em>L. salicaria</em>, <em>L. virgatum</em> shifted more aboveground allocation away from reproduction, decreased inflorescence biomass by 40% more, and produced 7% more stem aerenchymatous phellum, a specialized tissue that maintains aeration. Despite these more pronounced responses to flooding stress, <em>L. virgatum</em> had higher fitness (inflorescence biomass and reproductive allocation) than <em>L. salicaria</em>. Overall, <em>L. virgatum</em> differed from <em>L</em>. <em>salicaria</em> in functionally important ways. <em>Lythrum virgatum</em> persisted under flooding and produced more reproductive biomass than <em>L. salicaria</em> under both flooded and non-flooded conditions. However, inundation stressed <em>L. virgatum</em> more than <em>L. salicaria</em>. <em>Lythrum virgatum</em> is likely able to establish in the wetland habitats in which <em>L. salicaria</em> prevails but may possess broader habitat tolerances.</p>
Greater flowering and response to flooding in Lythrum virgatum than L. salicaria (purple loosestrife)
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Data from: Lythrum salicaria common garden under Neogalerucella herbivory
<p>We transplanted1088 seedlings of the invasive perennial plant <i>Lythrum salicaria</i> (purple loosestrife), from 136 maternal families sourced from 17 populations in the region around Ottawa, Canada, into a common garden containing 4 plots. The 17 populations differed in their prior exposure to the biocontrol agent <i>Neogalerucella spp.</i> leaf beetles (naïve = no prior exposure; recent = secondary colonization, ~5-15 years; release = sites of biocontrol release, ~20 years ago). Plants were planted in a wetland containing other <em>Lythrum</em> plants and experienced ambient (but significant) herbivory by <i>Neogalerucella </i>spp. leaf beetles. We measured herbivory, plant size and biomass over a period of 3.5 years; see the publication for more details. This experiment used the same seed material as a previously published greenhouse study by Stastny & Sargent 2017 (see below). Additional datasets, such as the proportion and phenology of flowering individuals, leaf size, stem and meristem numbers, etc., are available upon request.</p> <p> </p>
Data from: Lythrum salicaria common garden under Neogalerucella herbivory
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Data from: Effects of admixture in native and invasive populations of Lythrum salicaria
Intraspecific hybridization between diverged populations can enhance fitness via various genetic mechanisms. The benefits of such admixture have been proposed to be particularly relevant in biological invasions, when invasive populations originating from different source populations are found sympatrically. However, it remains poorly understood if admixture is an important contributor to plant invasive success and how admixture effects compare between invasive and native ranges. Here, we used experimental crosses in Lythrum salicaria, a species with well-established history of multiple introductions to Eastern North America, to quantify and compare admixture effects in native European and invasive North American populations. We observed heterosis in between-population crosses both in native and invasive ranges. However, invasive-range heterosis was restricted to crosses between two different Eastern and Western invasion fronts, whereas heterosis was absent in geographically distant crosses within a single large invasion front. Our results suggest that multiple introductions have led to already-admixed invasion fronts, such that experimental crosses do not further increase performance, but that contact between different invasion fronts further enhances fitness after admixture. Thus, intra-continental movement of invasive plants in their introduced range has the potential to boost invasiveness even in well-established and successfully spreading invasive species.
Data from: Comparison of quantitative and molecular genetic variation of native vs. invasive populations of purple loosestrife (Lythrum salicaria L., Lythraceae)
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Data from: Population divergence along lines of genetic variance and covariance in the invasive plant Lythrum salicaria in eastern North America
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Data from: Effects of admixture in native and invasive populations of Lythrum salicaria
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Lythrum salicaria L. (BR0000011462156)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
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